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-rw-r--r--src/spdk/dpdk/examples/ipsec-secgw/sa.c1010
1 files changed, 1010 insertions, 0 deletions
diff --git a/src/spdk/dpdk/examples/ipsec-secgw/sa.c b/src/spdk/dpdk/examples/ipsec-secgw/sa.c
new file mode 100644
index 00000000..4ab8e098
--- /dev/null
+++ b/src/spdk/dpdk/examples/ipsec-secgw/sa.c
@@ -0,0 +1,1010 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2016-2017 Intel Corporation
+ */
+
+/*
+ * Security Associations
+ */
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/ip6.h>
+
+#include <rte_memzone.h>
+#include <rte_crypto.h>
+#include <rte_security.h>
+#include <rte_cryptodev.h>
+#include <rte_byteorder.h>
+#include <rte_errno.h>
+#include <rte_ip.h>
+#include <rte_random.h>
+#include <rte_ethdev.h>
+
+#include "ipsec.h"
+#include "esp.h"
+#include "parser.h"
+
+#define IPDEFTTL 64
+
+struct supported_cipher_algo {
+ const char *keyword;
+ enum rte_crypto_cipher_algorithm algo;
+ uint16_t iv_len;
+ uint16_t block_size;
+ uint16_t key_len;
+};
+
+struct supported_auth_algo {
+ const char *keyword;
+ enum rte_crypto_auth_algorithm algo;
+ uint16_t digest_len;
+ uint16_t key_len;
+ uint8_t key_not_req;
+};
+
+struct supported_aead_algo {
+ const char *keyword;
+ enum rte_crypto_aead_algorithm algo;
+ uint16_t iv_len;
+ uint16_t block_size;
+ uint16_t digest_len;
+ uint16_t key_len;
+ uint8_t aad_len;
+};
+
+
+const struct supported_cipher_algo cipher_algos[] = {
+ {
+ .keyword = "null",
+ .algo = RTE_CRYPTO_CIPHER_NULL,
+ .iv_len = 0,
+ .block_size = 4,
+ .key_len = 0
+ },
+ {
+ .keyword = "aes-128-cbc",
+ .algo = RTE_CRYPTO_CIPHER_AES_CBC,
+ .iv_len = 16,
+ .block_size = 16,
+ .key_len = 16
+ },
+ {
+ .keyword = "aes-256-cbc",
+ .algo = RTE_CRYPTO_CIPHER_AES_CBC,
+ .iv_len = 16,
+ .block_size = 16,
+ .key_len = 32
+ },
+ {
+ .keyword = "aes-128-ctr",
+ .algo = RTE_CRYPTO_CIPHER_AES_CTR,
+ .iv_len = 8,
+ .block_size = 16, /* XXX AESNI MB limition, should be 4 */
+ .key_len = 20
+ }
+};
+
+const struct supported_auth_algo auth_algos[] = {
+ {
+ .keyword = "null",
+ .algo = RTE_CRYPTO_AUTH_NULL,
+ .digest_len = 0,
+ .key_len = 0,
+ .key_not_req = 1
+ },
+ {
+ .keyword = "sha1-hmac",
+ .algo = RTE_CRYPTO_AUTH_SHA1_HMAC,
+ .digest_len = 12,
+ .key_len = 20
+ },
+ {
+ .keyword = "sha256-hmac",
+ .algo = RTE_CRYPTO_AUTH_SHA256_HMAC,
+ .digest_len = 12,
+ .key_len = 32
+ }
+};
+
+const struct supported_aead_algo aead_algos[] = {
+ {
+ .keyword = "aes-128-gcm",
+ .algo = RTE_CRYPTO_AEAD_AES_GCM,
+ .iv_len = 8,
+ .block_size = 4,
+ .key_len = 20,
+ .digest_len = 16,
+ .aad_len = 8,
+ }
+};
+
+struct ipsec_sa sa_out[IPSEC_SA_MAX_ENTRIES];
+uint32_t nb_sa_out;
+
+struct ipsec_sa sa_in[IPSEC_SA_MAX_ENTRIES];
+uint32_t nb_sa_in;
+
+static const struct supported_cipher_algo *
+find_match_cipher_algo(const char *cipher_keyword)
+{
+ size_t i;
+
+ for (i = 0; i < RTE_DIM(cipher_algos); i++) {
+ const struct supported_cipher_algo *algo =
+ &cipher_algos[i];
+
+ if (strcmp(cipher_keyword, algo->keyword) == 0)
+ return algo;
+ }
+
+ return NULL;
+}
+
+static const struct supported_auth_algo *
+find_match_auth_algo(const char *auth_keyword)
+{
+ size_t i;
+
+ for (i = 0; i < RTE_DIM(auth_algos); i++) {
+ const struct supported_auth_algo *algo =
+ &auth_algos[i];
+
+ if (strcmp(auth_keyword, algo->keyword) == 0)
+ return algo;
+ }
+
+ return NULL;
+}
+
+static const struct supported_aead_algo *
+find_match_aead_algo(const char *aead_keyword)
+{
+ size_t i;
+
+ for (i = 0; i < RTE_DIM(aead_algos); i++) {
+ const struct supported_aead_algo *algo =
+ &aead_algos[i];
+
+ if (strcmp(aead_keyword, algo->keyword) == 0)
+ return algo;
+ }
+
+ return NULL;
+}
+
+/** parse_key_string
+ * parse x:x:x:x.... hex number key string into uint8_t *key
+ * return:
+ * > 0: number of bytes parsed
+ * 0: failed
+ */
+static uint32_t
+parse_key_string(const char *key_str, uint8_t *key)
+{
+ const char *pt_start = key_str, *pt_end = key_str;
+ uint32_t nb_bytes = 0;
+
+ while (pt_end != NULL) {
+ char sub_str[3] = {0};
+
+ pt_end = strchr(pt_start, ':');
+
+ if (pt_end == NULL) {
+ if (strlen(pt_start) > 2)
+ return 0;
+ strncpy(sub_str, pt_start, 2);
+ } else {
+ if (pt_end - pt_start > 2)
+ return 0;
+
+ strncpy(sub_str, pt_start, pt_end - pt_start);
+ pt_start = pt_end + 1;
+ }
+
+ key[nb_bytes++] = strtol(sub_str, NULL, 16);
+ }
+
+ return nb_bytes;
+}
+
+void
+parse_sa_tokens(char **tokens, uint32_t n_tokens,
+ struct parse_status *status)
+{
+ struct ipsec_sa *rule = NULL;
+ uint32_t ti; /*token index*/
+ uint32_t *ri /*rule index*/;
+ uint32_t cipher_algo_p = 0;
+ uint32_t auth_algo_p = 0;
+ uint32_t aead_algo_p = 0;
+ uint32_t src_p = 0;
+ uint32_t dst_p = 0;
+ uint32_t mode_p = 0;
+ uint32_t type_p = 0;
+ uint32_t portid_p = 0;
+
+ if (strcmp(tokens[0], "in") == 0) {
+ ri = &nb_sa_in;
+
+ APP_CHECK(*ri <= IPSEC_SA_MAX_ENTRIES - 1, status,
+ "too many sa rules, abort insertion\n");
+ if (status->status < 0)
+ return;
+
+ rule = &sa_in[*ri];
+ } else {
+ ri = &nb_sa_out;
+
+ APP_CHECK(*ri <= IPSEC_SA_MAX_ENTRIES - 1, status,
+ "too many sa rules, abort insertion\n");
+ if (status->status < 0)
+ return;
+
+ rule = &sa_out[*ri];
+ }
+
+ /* spi number */
+ APP_CHECK_TOKEN_IS_NUM(tokens, 1, status);
+ if (status->status < 0)
+ return;
+ if (atoi(tokens[1]) == INVALID_SPI)
+ return;
+ rule->spi = atoi(tokens[1]);
+
+ for (ti = 2; ti < n_tokens; ti++) {
+ if (strcmp(tokens[ti], "mode") == 0) {
+ APP_CHECK_PRESENCE(mode_p, tokens[ti], status);
+ if (status->status < 0)
+ return;
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ if (strcmp(tokens[ti], "ipv4-tunnel") == 0)
+ rule->flags = IP4_TUNNEL;
+ else if (strcmp(tokens[ti], "ipv6-tunnel") == 0)
+ rule->flags = IP6_TUNNEL;
+ else if (strcmp(tokens[ti], "transport") == 0)
+ rule->flags = TRANSPORT;
+ else {
+ APP_CHECK(0, status, "unrecognized "
+ "input \"%s\"", tokens[ti]);
+ return;
+ }
+
+ mode_p = 1;
+ continue;
+ }
+
+ if (strcmp(tokens[ti], "cipher_algo") == 0) {
+ const struct supported_cipher_algo *algo;
+ uint32_t key_len;
+
+ APP_CHECK_PRESENCE(cipher_algo_p, tokens[ti],
+ status);
+ if (status->status < 0)
+ return;
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ algo = find_match_cipher_algo(tokens[ti]);
+
+ APP_CHECK(algo != NULL, status, "unrecognized "
+ "input \"%s\"", tokens[ti]);
+
+ rule->cipher_algo = algo->algo;
+ rule->block_size = algo->block_size;
+ rule->iv_len = algo->iv_len;
+ rule->cipher_key_len = algo->key_len;
+
+ /* for NULL algorithm, no cipher key required */
+ if (rule->cipher_algo == RTE_CRYPTO_CIPHER_NULL) {
+ cipher_algo_p = 1;
+ continue;
+ }
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ APP_CHECK(strcmp(tokens[ti], "cipher_key") == 0,
+ status, "unrecognized input \"%s\", "
+ "expect \"cipher_key\"", tokens[ti]);
+ if (status->status < 0)
+ return;
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ key_len = parse_key_string(tokens[ti],
+ rule->cipher_key);
+ APP_CHECK(key_len == rule->cipher_key_len, status,
+ "unrecognized input \"%s\"", tokens[ti]);
+ if (status->status < 0)
+ return;
+
+ if (algo->algo == RTE_CRYPTO_CIPHER_AES_CBC)
+ rule->salt = (uint32_t)rte_rand();
+
+ if (algo->algo == RTE_CRYPTO_CIPHER_AES_CTR) {
+ key_len -= 4;
+ rule->cipher_key_len = key_len;
+ memcpy(&rule->salt,
+ &rule->cipher_key[key_len], 4);
+ }
+
+ cipher_algo_p = 1;
+ continue;
+ }
+
+ if (strcmp(tokens[ti], "auth_algo") == 0) {
+ const struct supported_auth_algo *algo;
+ uint32_t key_len;
+
+ APP_CHECK_PRESENCE(auth_algo_p, tokens[ti],
+ status);
+ if (status->status < 0)
+ return;
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ algo = find_match_auth_algo(tokens[ti]);
+ APP_CHECK(algo != NULL, status, "unrecognized "
+ "input \"%s\"", tokens[ti]);
+
+ rule->auth_algo = algo->algo;
+ rule->auth_key_len = algo->key_len;
+ rule->digest_len = algo->digest_len;
+
+ /* NULL algorithm and combined algos do not
+ * require auth key
+ */
+ if (algo->key_not_req) {
+ auth_algo_p = 1;
+ continue;
+ }
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ APP_CHECK(strcmp(tokens[ti], "auth_key") == 0,
+ status, "unrecognized input \"%s\", "
+ "expect \"auth_key\"", tokens[ti]);
+ if (status->status < 0)
+ return;
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ key_len = parse_key_string(tokens[ti],
+ rule->auth_key);
+ APP_CHECK(key_len == rule->auth_key_len, status,
+ "unrecognized input \"%s\"", tokens[ti]);
+ if (status->status < 0)
+ return;
+
+ auth_algo_p = 1;
+ continue;
+ }
+
+ if (strcmp(tokens[ti], "aead_algo") == 0) {
+ const struct supported_aead_algo *algo;
+ uint32_t key_len;
+
+ APP_CHECK_PRESENCE(aead_algo_p, tokens[ti],
+ status);
+ if (status->status < 0)
+ return;
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ algo = find_match_aead_algo(tokens[ti]);
+
+ APP_CHECK(algo != NULL, status, "unrecognized "
+ "input \"%s\"", tokens[ti]);
+
+ rule->aead_algo = algo->algo;
+ rule->cipher_key_len = algo->key_len;
+ rule->digest_len = algo->digest_len;
+ rule->aad_len = algo->aad_len;
+ rule->block_size = algo->block_size;
+ rule->iv_len = algo->iv_len;
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ APP_CHECK(strcmp(tokens[ti], "aead_key") == 0,
+ status, "unrecognized input \"%s\", "
+ "expect \"aead_key\"", tokens[ti]);
+ if (status->status < 0)
+ return;
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ key_len = parse_key_string(tokens[ti],
+ rule->cipher_key);
+ APP_CHECK(key_len == rule->cipher_key_len, status,
+ "unrecognized input \"%s\"", tokens[ti]);
+ if (status->status < 0)
+ return;
+
+ key_len -= 4;
+ rule->cipher_key_len = key_len;
+ memcpy(&rule->salt,
+ &rule->cipher_key[key_len], 4);
+
+ aead_algo_p = 1;
+ continue;
+ }
+
+ if (strcmp(tokens[ti], "src") == 0) {
+ APP_CHECK_PRESENCE(src_p, tokens[ti], status);
+ if (status->status < 0)
+ return;
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ if (rule->flags == IP4_TUNNEL) {
+ struct in_addr ip;
+
+ APP_CHECK(parse_ipv4_addr(tokens[ti],
+ &ip, NULL) == 0, status,
+ "unrecognized input \"%s\", "
+ "expect valid ipv4 addr",
+ tokens[ti]);
+ if (status->status < 0)
+ return;
+ rule->src.ip.ip4 = rte_bswap32(
+ (uint32_t)ip.s_addr);
+ } else if (rule->flags == IP6_TUNNEL) {
+ struct in6_addr ip;
+
+ APP_CHECK(parse_ipv6_addr(tokens[ti], &ip,
+ NULL) == 0, status,
+ "unrecognized input \"%s\", "
+ "expect valid ipv6 addr",
+ tokens[ti]);
+ if (status->status < 0)
+ return;
+ memcpy(rule->src.ip.ip6.ip6_b,
+ ip.s6_addr, 16);
+ } else if (rule->flags == TRANSPORT) {
+ APP_CHECK(0, status, "unrecognized input "
+ "\"%s\"", tokens[ti]);
+ return;
+ }
+
+ src_p = 1;
+ continue;
+ }
+
+ if (strcmp(tokens[ti], "dst") == 0) {
+ APP_CHECK_PRESENCE(dst_p, tokens[ti], status);
+ if (status->status < 0)
+ return;
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ if (rule->flags == IP4_TUNNEL) {
+ struct in_addr ip;
+
+ APP_CHECK(parse_ipv4_addr(tokens[ti],
+ &ip, NULL) == 0, status,
+ "unrecognized input \"%s\", "
+ "expect valid ipv4 addr",
+ tokens[ti]);
+ if (status->status < 0)
+ return;
+ rule->dst.ip.ip4 = rte_bswap32(
+ (uint32_t)ip.s_addr);
+ } else if (rule->flags == IP6_TUNNEL) {
+ struct in6_addr ip;
+
+ APP_CHECK(parse_ipv6_addr(tokens[ti], &ip,
+ NULL) == 0, status,
+ "unrecognized input \"%s\", "
+ "expect valid ipv6 addr",
+ tokens[ti]);
+ if (status->status < 0)
+ return;
+ memcpy(rule->dst.ip.ip6.ip6_b, ip.s6_addr, 16);
+ } else if (rule->flags == TRANSPORT) {
+ APP_CHECK(0, status, "unrecognized "
+ "input \"%s\"", tokens[ti]);
+ return;
+ }
+
+ dst_p = 1;
+ continue;
+ }
+
+ if (strcmp(tokens[ti], "type") == 0) {
+ APP_CHECK_PRESENCE(type_p, tokens[ti], status);
+ if (status->status < 0)
+ return;
+
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+
+ if (strcmp(tokens[ti], "inline-crypto-offload") == 0)
+ rule->type =
+ RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO;
+ else if (strcmp(tokens[ti],
+ "inline-protocol-offload") == 0)
+ rule->type =
+ RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL;
+ else if (strcmp(tokens[ti],
+ "lookaside-protocol-offload") == 0)
+ rule->type =
+ RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL;
+ else if (strcmp(tokens[ti], "no-offload") == 0)
+ rule->type = RTE_SECURITY_ACTION_TYPE_NONE;
+ else {
+ APP_CHECK(0, status, "Invalid input \"%s\"",
+ tokens[ti]);
+ return;
+ }
+
+ type_p = 1;
+ continue;
+ }
+
+ if (strcmp(tokens[ti], "port_id") == 0) {
+ APP_CHECK_PRESENCE(portid_p, tokens[ti], status);
+ if (status->status < 0)
+ return;
+ INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
+ if (status->status < 0)
+ return;
+ rule->portid = atoi(tokens[ti]);
+ if (status->status < 0)
+ return;
+ portid_p = 1;
+ continue;
+ }
+
+ /* unrecognizeable input */
+ APP_CHECK(0, status, "unrecognized input \"%s\"",
+ tokens[ti]);
+ return;
+ }
+
+ if (aead_algo_p) {
+ APP_CHECK(cipher_algo_p == 0, status,
+ "AEAD used, no need for cipher options");
+ if (status->status < 0)
+ return;
+
+ APP_CHECK(auth_algo_p == 0, status,
+ "AEAD used, no need for auth options");
+ if (status->status < 0)
+ return;
+ } else {
+ APP_CHECK(cipher_algo_p == 1, status, "missing cipher or AEAD options");
+ if (status->status < 0)
+ return;
+
+ APP_CHECK(auth_algo_p == 1, status, "missing auth or AEAD options");
+ if (status->status < 0)
+ return;
+ }
+
+ APP_CHECK(mode_p == 1, status, "missing mode option");
+ if (status->status < 0)
+ return;
+
+ if ((rule->type != RTE_SECURITY_ACTION_TYPE_NONE) && (portid_p == 0))
+ printf("Missing portid option, falling back to non-offload\n");
+
+ if (!type_p || !portid_p) {
+ rule->type = RTE_SECURITY_ACTION_TYPE_NONE;
+ rule->portid = -1;
+ }
+
+ *ri = *ri + 1;
+}
+
+static inline void
+print_one_sa_rule(const struct ipsec_sa *sa, int inbound)
+{
+ uint32_t i;
+ uint8_t a, b, c, d;
+
+ printf("\tspi_%s(%3u):", inbound?"in":"out", sa->spi);
+
+ for (i = 0; i < RTE_DIM(cipher_algos); i++) {
+ if (cipher_algos[i].algo == sa->cipher_algo &&
+ cipher_algos[i].key_len == sa->cipher_key_len) {
+ printf("%s ", cipher_algos[i].keyword);
+ break;
+ }
+ }
+
+ for (i = 0; i < RTE_DIM(auth_algos); i++) {
+ if (auth_algos[i].algo == sa->auth_algo) {
+ printf("%s ", auth_algos[i].keyword);
+ break;
+ }
+ }
+
+ for (i = 0; i < RTE_DIM(aead_algos); i++) {
+ if (aead_algos[i].algo == sa->aead_algo) {
+ printf("%s ", aead_algos[i].keyword);
+ break;
+ }
+ }
+
+ printf("mode:");
+
+ switch (sa->flags) {
+ case IP4_TUNNEL:
+ printf("IP4Tunnel ");
+ uint32_t_to_char(sa->src.ip.ip4, &a, &b, &c, &d);
+ printf("%hhu.%hhu.%hhu.%hhu ", d, c, b, a);
+ uint32_t_to_char(sa->dst.ip.ip4, &a, &b, &c, &d);
+ printf("%hhu.%hhu.%hhu.%hhu", d, c, b, a);
+ break;
+ case IP6_TUNNEL:
+ printf("IP6Tunnel ");
+ for (i = 0; i < 16; i++) {
+ if (i % 2 && i != 15)
+ printf("%.2x:", sa->src.ip.ip6.ip6_b[i]);
+ else
+ printf("%.2x", sa->src.ip.ip6.ip6_b[i]);
+ }
+ printf(" ");
+ for (i = 0; i < 16; i++) {
+ if (i % 2 && i != 15)
+ printf("%.2x:", sa->dst.ip.ip6.ip6_b[i]);
+ else
+ printf("%.2x", sa->dst.ip.ip6.ip6_b[i]);
+ }
+ break;
+ case TRANSPORT:
+ printf("Transport");
+ break;
+ }
+ printf("\n");
+}
+
+struct sa_ctx {
+ struct ipsec_sa sa[IPSEC_SA_MAX_ENTRIES];
+ union {
+ struct {
+ struct rte_crypto_sym_xform a;
+ struct rte_crypto_sym_xform b;
+ };
+ } xf[IPSEC_SA_MAX_ENTRIES];
+};
+
+static struct sa_ctx *
+sa_create(const char *name, int32_t socket_id)
+{
+ char s[PATH_MAX];
+ struct sa_ctx *sa_ctx;
+ uint32_t mz_size;
+ const struct rte_memzone *mz;
+
+ snprintf(s, sizeof(s), "%s_%u", name, socket_id);
+
+ /* Create SA array table */
+ printf("Creating SA context with %u maximum entries\n",
+ IPSEC_SA_MAX_ENTRIES);
+
+ mz_size = sizeof(struct sa_ctx);
+ mz = rte_memzone_reserve(s, mz_size, socket_id,
+ RTE_MEMZONE_1GB | RTE_MEMZONE_SIZE_HINT_ONLY);
+ if (mz == NULL) {
+ printf("Failed to allocate SA DB memory\n");
+ rte_errno = -ENOMEM;
+ return NULL;
+ }
+
+ sa_ctx = (struct sa_ctx *)mz->addr;
+
+ return sa_ctx;
+}
+
+static int
+check_eth_dev_caps(uint16_t portid, uint32_t inbound)
+{
+ struct rte_eth_dev_info dev_info;
+
+ rte_eth_dev_info_get(portid, &dev_info);
+
+ if (inbound) {
+ if ((dev_info.rx_offload_capa &
+ DEV_RX_OFFLOAD_SECURITY) == 0) {
+ RTE_LOG(WARNING, PORT,
+ "hardware RX IPSec offload is not supported\n");
+ return -EINVAL;
+ }
+
+ } else { /* outbound */
+ if ((dev_info.tx_offload_capa &
+ DEV_TX_OFFLOAD_SECURITY) == 0) {
+ RTE_LOG(WARNING, PORT,
+ "hardware TX IPSec offload is not supported\n");
+ return -EINVAL;
+ }
+ }
+ return 0;
+}
+
+
+static int
+sa_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
+ uint32_t nb_entries, uint32_t inbound)
+{
+ struct ipsec_sa *sa;
+ uint32_t i, idx;
+ uint16_t iv_length;
+
+ for (i = 0; i < nb_entries; i++) {
+ idx = SPI2IDX(entries[i].spi);
+ sa = &sa_ctx->sa[idx];
+ if (sa->spi != 0) {
+ printf("Index %u already in use by SPI %u\n",
+ idx, sa->spi);
+ return -EINVAL;
+ }
+ *sa = entries[i];
+ sa->seq = 0;
+
+ if (sa->type == RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL ||
+ sa->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) {
+ if (check_eth_dev_caps(sa->portid, inbound))
+ return -EINVAL;
+ }
+
+ sa->direction = (inbound == 1) ?
+ RTE_SECURITY_IPSEC_SA_DIR_INGRESS :
+ RTE_SECURITY_IPSEC_SA_DIR_EGRESS;
+
+ switch (sa->flags) {
+ case IP4_TUNNEL:
+ sa->src.ip.ip4 = rte_cpu_to_be_32(sa->src.ip.ip4);
+ sa->dst.ip.ip4 = rte_cpu_to_be_32(sa->dst.ip.ip4);
+ }
+
+ if (sa->aead_algo == RTE_CRYPTO_AEAD_AES_GCM) {
+ iv_length = 16;
+
+ sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_AEAD;
+ sa_ctx->xf[idx].a.aead.algo = sa->aead_algo;
+ sa_ctx->xf[idx].a.aead.key.data = sa->cipher_key;
+ sa_ctx->xf[idx].a.aead.key.length =
+ sa->cipher_key_len;
+ sa_ctx->xf[idx].a.aead.op = (inbound == 1) ?
+ RTE_CRYPTO_AEAD_OP_DECRYPT :
+ RTE_CRYPTO_AEAD_OP_ENCRYPT;
+ sa_ctx->xf[idx].a.next = NULL;
+ sa_ctx->xf[idx].a.aead.iv.offset = IV_OFFSET;
+ sa_ctx->xf[idx].a.aead.iv.length = iv_length;
+ sa_ctx->xf[idx].a.aead.aad_length =
+ sa->aad_len;
+ sa_ctx->xf[idx].a.aead.digest_length =
+ sa->digest_len;
+
+ sa->xforms = &sa_ctx->xf[idx].a;
+
+ print_one_sa_rule(sa, inbound);
+ } else {
+ switch (sa->cipher_algo) {
+ case RTE_CRYPTO_CIPHER_NULL:
+ case RTE_CRYPTO_CIPHER_AES_CBC:
+ iv_length = sa->iv_len;
+ break;
+ case RTE_CRYPTO_CIPHER_AES_CTR:
+ iv_length = 16;
+ break;
+ default:
+ RTE_LOG(ERR, IPSEC_ESP,
+ "unsupported cipher algorithm %u\n",
+ sa->cipher_algo);
+ return -EINVAL;
+ }
+
+ if (inbound) {
+ sa_ctx->xf[idx].b.type = RTE_CRYPTO_SYM_XFORM_CIPHER;
+ sa_ctx->xf[idx].b.cipher.algo = sa->cipher_algo;
+ sa_ctx->xf[idx].b.cipher.key.data = sa->cipher_key;
+ sa_ctx->xf[idx].b.cipher.key.length =
+ sa->cipher_key_len;
+ sa_ctx->xf[idx].b.cipher.op =
+ RTE_CRYPTO_CIPHER_OP_DECRYPT;
+ sa_ctx->xf[idx].b.next = NULL;
+ sa_ctx->xf[idx].b.cipher.iv.offset = IV_OFFSET;
+ sa_ctx->xf[idx].b.cipher.iv.length = iv_length;
+
+ sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_AUTH;
+ sa_ctx->xf[idx].a.auth.algo = sa->auth_algo;
+ sa_ctx->xf[idx].a.auth.key.data = sa->auth_key;
+ sa_ctx->xf[idx].a.auth.key.length =
+ sa->auth_key_len;
+ sa_ctx->xf[idx].a.auth.digest_length =
+ sa->digest_len;
+ sa_ctx->xf[idx].a.auth.op =
+ RTE_CRYPTO_AUTH_OP_VERIFY;
+ } else { /* outbound */
+ sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_CIPHER;
+ sa_ctx->xf[idx].a.cipher.algo = sa->cipher_algo;
+ sa_ctx->xf[idx].a.cipher.key.data = sa->cipher_key;
+ sa_ctx->xf[idx].a.cipher.key.length =
+ sa->cipher_key_len;
+ sa_ctx->xf[idx].a.cipher.op =
+ RTE_CRYPTO_CIPHER_OP_ENCRYPT;
+ sa_ctx->xf[idx].a.next = NULL;
+ sa_ctx->xf[idx].a.cipher.iv.offset = IV_OFFSET;
+ sa_ctx->xf[idx].a.cipher.iv.length = iv_length;
+
+ sa_ctx->xf[idx].b.type = RTE_CRYPTO_SYM_XFORM_AUTH;
+ sa_ctx->xf[idx].b.auth.algo = sa->auth_algo;
+ sa_ctx->xf[idx].b.auth.key.data = sa->auth_key;
+ sa_ctx->xf[idx].b.auth.key.length =
+ sa->auth_key_len;
+ sa_ctx->xf[idx].b.auth.digest_length =
+ sa->digest_len;
+ sa_ctx->xf[idx].b.auth.op =
+ RTE_CRYPTO_AUTH_OP_GENERATE;
+ }
+
+ sa_ctx->xf[idx].a.next = &sa_ctx->xf[idx].b;
+ sa_ctx->xf[idx].b.next = NULL;
+ sa->xforms = &sa_ctx->xf[idx].a;
+
+ print_one_sa_rule(sa, inbound);
+ }
+ }
+
+ return 0;
+}
+
+static inline int
+sa_out_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
+ uint32_t nb_entries)
+{
+ return sa_add_rules(sa_ctx, entries, nb_entries, 0);
+}
+
+static inline int
+sa_in_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
+ uint32_t nb_entries)
+{
+ return sa_add_rules(sa_ctx, entries, nb_entries, 1);
+}
+
+void
+sa_init(struct socket_ctx *ctx, int32_t socket_id)
+{
+ const char *name;
+
+ if (ctx == NULL)
+ rte_exit(EXIT_FAILURE, "NULL context.\n");
+
+ if (ctx->sa_in != NULL)
+ rte_exit(EXIT_FAILURE, "Inbound SA DB for socket %u already "
+ "initialized\n", socket_id);
+
+ if (ctx->sa_out != NULL)
+ rte_exit(EXIT_FAILURE, "Outbound SA DB for socket %u already "
+ "initialized\n", socket_id);
+
+ if (nb_sa_in > 0) {
+ name = "sa_in";
+ ctx->sa_in = sa_create(name, socket_id);
+ if (ctx->sa_in == NULL)
+ rte_exit(EXIT_FAILURE, "Error [%d] creating SA "
+ "context %s in socket %d\n", rte_errno,
+ name, socket_id);
+
+ sa_in_add_rules(ctx->sa_in, sa_in, nb_sa_in);
+ } else
+ RTE_LOG(WARNING, IPSEC, "No SA Inbound rule specified\n");
+
+ if (nb_sa_out > 0) {
+ name = "sa_out";
+ ctx->sa_out = sa_create(name, socket_id);
+ if (ctx->sa_out == NULL)
+ rte_exit(EXIT_FAILURE, "Error [%d] creating SA "
+ "context %s in socket %d\n", rte_errno,
+ name, socket_id);
+
+ sa_out_add_rules(ctx->sa_out, sa_out, nb_sa_out);
+ } else
+ RTE_LOG(WARNING, IPSEC, "No SA Outbound rule "
+ "specified\n");
+}
+
+int
+inbound_sa_check(struct sa_ctx *sa_ctx, struct rte_mbuf *m, uint32_t sa_idx)
+{
+ struct ipsec_mbuf_metadata *priv;
+
+ priv = get_priv(m);
+
+ return (sa_ctx->sa[sa_idx].spi == priv->sa->spi);
+}
+
+static inline void
+single_inbound_lookup(struct ipsec_sa *sadb, struct rte_mbuf *pkt,
+ struct ipsec_sa **sa_ret)
+{
+ struct esp_hdr *esp;
+ struct ip *ip;
+ uint32_t *src4_addr;
+ uint8_t *src6_addr;
+ struct ipsec_sa *sa;
+
+ *sa_ret = NULL;
+
+ ip = rte_pktmbuf_mtod(pkt, struct ip *);
+ if (ip->ip_v == IPVERSION)
+ esp = (struct esp_hdr *)(ip + 1);
+ else
+ esp = (struct esp_hdr *)(((struct ip6_hdr *)ip) + 1);
+
+ if (esp->spi == INVALID_SPI)
+ return;
+
+ sa = &sadb[SPI2IDX(rte_be_to_cpu_32(esp->spi))];
+ if (rte_be_to_cpu_32(esp->spi) != sa->spi)
+ return;
+
+ switch (sa->flags) {
+ case IP4_TUNNEL:
+ src4_addr = RTE_PTR_ADD(ip, offsetof(struct ip, ip_src));
+ if ((ip->ip_v == IPVERSION) &&
+ (sa->src.ip.ip4 == *src4_addr) &&
+ (sa->dst.ip.ip4 == *(src4_addr + 1)))
+ *sa_ret = sa;
+ break;
+ case IP6_TUNNEL:
+ src6_addr = RTE_PTR_ADD(ip, offsetof(struct ip6_hdr, ip6_src));
+ if ((ip->ip_v == IP6_VERSION) &&
+ !memcmp(&sa->src.ip.ip6.ip6, src6_addr, 16) &&
+ !memcmp(&sa->dst.ip.ip6.ip6, src6_addr + 16, 16))
+ *sa_ret = sa;
+ break;
+ case TRANSPORT:
+ *sa_ret = sa;
+ }
+}
+
+void
+inbound_sa_lookup(struct sa_ctx *sa_ctx, struct rte_mbuf *pkts[],
+ struct ipsec_sa *sa[], uint16_t nb_pkts)
+{
+ uint32_t i;
+
+ for (i = 0; i < nb_pkts; i++)
+ single_inbound_lookup(sa_ctx->sa, pkts[i], &sa[i]);
+}
+
+void
+outbound_sa_lookup(struct sa_ctx *sa_ctx, uint32_t sa_idx[],
+ struct ipsec_sa *sa[], uint16_t nb_pkts)
+{
+ uint32_t i;
+
+ for (i = 0; i < nb_pkts; i++)
+ sa[i] = &sa_ctx->sa[sa_idx[i]];
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 02:17:54 +0000